Homeโ€บ Air and Fuel Delivery > Fuel Injection System and Related Componentsโ€บ Delphi EX6703801 Fuel Injector
Part #: 553603

Delphi EX6703801 Fuel Injector

286 vehicles fit this part
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Delphi Remanufactured Fuel Injector for Chevrolet and GMC Vehicles

The Delphi EX6703801 fuel injector is a remanufactured mechanical injector designed for gas engines in light-duty applications. Engineered to meet standard replacement specifications, this fuel injector is compatible with a wide range of Chevrolet and GMC trucks and SUVs, ensuring reliable fuel delivery and engine performance.

  • Compatible with Chevrolet and GMC models including Blazer, C10, C1500, K5 Blazer, and more
  • Mechanical fuel injection type for precise fuel delivery
  • Durable metal body construction for long-lasting use
  • Clip attachment method for secure installation
  • Includes fuel injector and instruction sheet; mounting hardware and gaskets not included
  • Standard replacement grade, remanufactured unit
  • Designed for light-duty fuel injection systems

Product Details and Specifications

The Delphi EX6703801 fuel injector is specifically designed for gas-fueled engines in Chevrolet and GMC vehicles such as the C10, C20, K10, and Suburban series. Its mechanical injection system ensures consistent fuel atomization, which is critical for maintaining engine efficiency and performance. The metal body enhances durability under typical operating conditions, while the clip attachment method allows for straightforward installation without additional mounting hardware. This remanufactured injector meets standard replacement criteria, providing a cost-effective solution for restoring fuel system functionality.

Compatible Vehicles and Applications

  • Chevrolet Blazer, C10, C20, C30, C1500, C2500, C3500
  • GMC Jimmy, K5 Blazer, K10, K20, K30, K1500, K2500, K3500
  • G20, G30, P20, P30, P2500, P3500 series
  • R10, R20, R30, R1500, R2500, R3500 models
  • V10, V20, V30, V1500, V2500, V3500 variants

Common Issues Addressed by This Fuel Injector

  • Engine misfires due to inconsistent fuel delivery
  • Reduced fuel efficiency and increased emissions
  • Rough idling or hesitation during acceleration
  • Fuel leaks or injector clogging in mechanical systems
  • Loss of engine power in light-duty Chevrolet and GMC trucks

Installation Notes and Tips

Installation of the Delphi EX6703801 fuel injector requires removal of the old injector and careful placement using the clip attachment method. Note that mounting hardware and gaskets are not included, so ensure these components are inspected and replaced if necessary. Follow the included instruction sheet for proper handling and torque specifications. It is recommended to clean the fuel rail and injector ports before installation to prevent contamination.

Quality Assurance and Warranty

This remanufactured fuel injector undergoes rigorous testing to meet Delphi's standard replacement quality. While specific warranty details are not provided, Delphi products typically adhere to industry standards for remanufactured components, offering reliable performance when installed correctly. For best results, use with compatible Chevrolet and GMC models as specified.

BrandKYB
Part Number553603
B-stopY
Compressed Length18.54
Dust Cover IncludedY
Extended Length22.54
Lower Mount TypeSPECIAL
R-stopY
Stroke Length4.00
Upper Mount TypeS1

This part fits 286 vehicles. Search below:

YearMakeModelPositionNotes
1991ChevroletBlazerN/A73.8mm Long
1991ChevroletC1500N/A73.8mm Long
1991ChevroletC2500N/A73.8mm Long
1991ChevroletC3500N/A73.8mm Long
1991ChevroletG20N/A73.8mm Long
1991ChevroletG30N/A73.8mm Long
1991ChevroletK1500N/A73.8mm Long
1991ChevroletK2500N/A73.8mm Long
1991ChevroletK3500N/A73.8mm Long
1991ChevroletP30N/A73.8mm Long
1991ChevroletR1500 SuburbanN/A73.8mm Long
1991ChevroletR2500 SuburbanN/A73.8mm Long
1991ChevroletR3500N/A73.8mm Long
1991ChevroletV1500 SuburbanN/A73.8mm Long
1991ChevroletV2500 SuburbanN/A73.8mm Long
1991ChevroletV3500N/A73.8mm Long
1991GMCC1500N/A73.8mm Long
1991GMCC2500N/A73.8mm Long
1991GMCC3500N/A73.8mm Long
1991GMCG2500N/A73.8mm Long
1991GMCG3500N/A73.8mm Long
1991GMCJimmyN/A73.8mm Long
1991GMCK1500N/A73.8mm Long
1991GMCK2500N/A73.8mm Long
1991GMCK3500N/A73.8mm Long
1991GMCP3500N/A73.8mm Long
1991GMCR1500 SuburbanN/A73.8mm Long
1991GMCR2500 SuburbanN/A73.8mm Long
1991GMCR3500N/A73.8mm Long
1991GMCV1500 SuburbanN/A73.8mm Long
1991GMCV2500 SuburbanN/A73.8mm Long
1991GMCV3500N/A73.8mm Long
1990ChevroletBlazerN/A73.8mm Long
1990ChevroletC1500N/A73.8mm Long
1990ChevroletC2500N/A73.8mm Long
1990ChevroletC3500N/A73.8mm Long
1990ChevroletG20N/A73.8mm Long
1990ChevroletG30N/A73.8mm Long
1990ChevroletK1500N/A73.8mm Long
1990ChevroletK2500N/A73.8mm Long
1990ChevroletK3500N/A73.8mm Long
1990ChevroletP30N/A73.8mm Long
1990ChevroletR1500 SuburbanN/A73.8mm Long
1990ChevroletR2500 SuburbanN/A73.8mm Long
1990ChevroletR3500N/A73.8mm Long
1990ChevroletV1500 SuburbanN/A73.8mm Long
1990ChevroletV2500 SuburbanN/A73.8mm Long
1990ChevroletV3500N/A73.8mm Long
1990GMCC1500N/A73.8mm Long
1990GMCC2500N/A73.8mm Long
1990GMCC3500N/A73.8mm Long
1990GMCG2500N/A73.8mm Long
1990GMCG3500N/A73.8mm Long
1990GMCJimmyN/A73.8mm Long
1990GMCK1500N/A73.8mm Long
1990GMCK2500N/A73.8mm Long
1990GMCK3500N/A73.8mm Long
1990GMCP3500N/A73.8mm Long
1990GMCR1500 SuburbanN/A73.8mm Long
1990GMCR2500 SuburbanN/A73.8mm Long
1990GMCR3500N/A73.8mm Long
1990GMCV1500 SuburbanN/A73.8mm Long
1990GMCV2500 SuburbanN/A73.8mm Long
1990GMCV3500N/A73.8mm Long
1989ChevroletBlazerN/A73.8mm Long
1989ChevroletC1500N/A73.8mm Long
1989ChevroletC2500N/A73.8mm Long
1989ChevroletC3500N/A73.8mm Long
1989ChevroletG20N/A73.8mm Long
1989ChevroletG30N/A73.8mm Long
1989ChevroletK1500N/A73.8mm Long
1989ChevroletK2500N/A73.8mm Long
1989ChevroletK3500N/A73.8mm Long
1989ChevroletP20N/A73.8mm Long
1989ChevroletP30N/A73.8mm Long
1989ChevroletR1500 SuburbanN/A73.8mm Long
1989ChevroletR2500N/A73.8mm Long
1989ChevroletR2500 SuburbanN/A73.8mm Long
1989ChevroletR3500N/A73.8mm Long
1989ChevroletV1500 SuburbanN/A73.8mm Long
1989ChevroletV2500 SuburbanN/A73.8mm Long
1989ChevroletV3500N/A73.8mm Long
1989GMCC1500N/A73.8mm Long
1989GMCC2500N/A73.8mm Long
1989GMCC3500N/A73.8mm Long
1989GMCG2500N/A73.8mm Long
1989GMCG3500N/A73.8mm Long
1989GMCJimmyN/A73.8mm Long
1989GMCK1500N/A73.8mm Long
1989GMCK2500N/A73.8mm Long
1989GMCK3500N/A73.8mm Long
1989GMCP2500N/A73.8mm Long
1989GMCP3500N/A73.8mm Long
1989GMCR1500 SuburbanN/A73.8mm Long
1989GMCR2500N/A73.8mm Long
1989GMCR2500 SuburbanN/A73.8mm Long
1989GMCR3500N/A73.8mm Long
1989GMCV1500 SuburbanN/A73.8mm Long
1989GMCV2500 SuburbanN/A73.8mm Long
1989GMCV3500N/A73.8mm Long
1988ChevroletBlazerN/A73.8mm Long
1988ChevroletC1500N/A73.8mm Long
1988ChevroletC2500N/A73.8mm Long
1988ChevroletC3500N/A73.8mm Long
1988ChevroletG20N/A73.8mm Long
1988ChevroletG30N/A73.8mm Long
1988ChevroletK1500N/A73.8mm Long
1988ChevroletK2500N/A73.8mm Long
1988ChevroletK3500N/A73.8mm Long
1988ChevroletP20N/A73.8mm Long
1988ChevroletP30N/A73.8mm Long
1988ChevroletR10 SuburbanN/A73.8mm Long
1988ChevroletR20N/A73.8mm Long
1988ChevroletR20 SuburbanN/A73.8mm Long
1988ChevroletR30N/A73.8mm Long
1988ChevroletV10 SuburbanN/A73.8mm Long
1988ChevroletV20 SuburbanN/A73.8mm Long
1988ChevroletV30N/A73.8mm Long
1988GMCC1500N/A73.8mm Long
1988GMCC2500N/A73.8mm Long
1988GMCC3500N/A73.8mm Long
1988GMCG2500N/A73.8mm Long
1988GMCG3500N/A73.8mm Long
1988GMCJimmyN/A73.8mm Long
1988GMCK1500N/A73.8mm Long
1988GMCK2500N/A73.8mm Long
1988GMCK3500N/A73.8mm Long
1988GMCP2500N/A73.8mm Long
1988GMCP3500N/A73.8mm Long
1988GMCR1500 SuburbanN/A73.8mm Long
1988GMCR2500N/A73.8mm Long
1988GMCR2500 SuburbanN/A73.8mm Long
1988GMCR3500N/A73.8mm Long
1988GMCV1500 SuburbanN/A73.8mm Long
1988GMCV2500 SuburbanN/A73.8mm Long
1988GMCV3500N/A73.8mm Long
1987ChevroletBlazerN/A73.8mm Long
1987ChevroletG20N/A73.8mm Long
1987ChevroletG30N/A73.8mm Long
1987ChevroletP20N/A73.8mm Long
1987ChevroletP30N/A73.8mm Long
1987ChevroletR10N/A73.8mm Long
1987ChevroletR10 SuburbanN/A73.8mm Long
1987ChevroletR20N/A73.8mm Long
1987ChevroletR20 SuburbanN/A73.8mm Long
1987ChevroletR30N/A73.8mm Long
1987ChevroletV10N/A73.8mm Long
1987ChevroletV10 SuburbanN/A73.8mm Long
1987ChevroletV20N/A73.8mm Long
1987ChevroletV20 SuburbanN/A73.8mm Long
1987ChevroletV30N/A73.8mm Long
1987GMCG2500N/A73.8mm Long
1987GMCG3500N/A73.8mm Long
1987GMCJimmyN/A73.8mm Long
1987GMCP2500N/A73.8mm Long
1987GMCP3500N/A73.8mm Long
1987GMCR1500N/A73.8mm Long
1987GMCR1500 SuburbanN/A73.8mm Long
1987GMCR2500N/A73.8mm Long
1987GMCR2500 SuburbanN/A73.8mm Long
1987GMCR3500N/A73.8mm Long
1987GMCV1500N/A73.8mm Long
1987GMCV1500 SuburbanN/A73.8mm Long
1987GMCV2500N/A73.8mm Long
1987GMCV2500 SuburbanN/A73.8mm Long
1987GMCV3500N/A73.8mm Long
1986ChevroletC10N/A73.8mm Long
1986ChevroletC10 SuburbanN/A73.8mm Long
1986ChevroletC20N/A73.8mm Long
1986ChevroletC20 SuburbanN/A73.8mm Long
1986ChevroletC30N/A73.8mm Long
1986ChevroletG20N/A73.8mm Long
1986ChevroletG30N/A73.8mm Long
1986ChevroletK10N/A73.8mm Long
1986ChevroletK10 SuburbanN/A73.8mm Long
1986ChevroletK20N/A73.8mm Long
1986ChevroletK20 SuburbanN/A73.8mm Long
1986ChevroletK30N/A73.8mm Long
1986ChevroletK5 BlazerN/A73.8mm Long
1986ChevroletP20N/A73.8mm Long
1986ChevroletP30N/A73.8mm Long
1986GMCC1500N/A73.8mm Long
1986GMCC1500 SuburbanN/A73.8mm Long
1986GMCC2500N/A73.8mm Long
1986GMCC2500 SuburbanN/A73.8mm Long
1986GMCC3500N/A73.8mm Long
1986GMCG2500N/A73.8mm Long
1986GMCG3500N/A73.8mm Long
1986GMCJimmyN/A73.8mm Long
1986GMCK1500N/A73.8mm Long
1986GMCK1500 SuburbanN/A73.8mm Long
1986GMCK2500N/A73.8mm Long
1986GMCK2500 SuburbanN/A73.8mm Long
1986GMCK3500N/A73.8mm Long
1986GMCP2500N/A73.8mm Long
1986GMCP3500N/A73.8mm Long
1985ChevroletC10N/A73.8mm Long
1985ChevroletC10 SuburbanN/A73.8mm Long
1985ChevroletC20N/A73.8mm Long
1985ChevroletC20 SuburbanN/A73.8mm Long
1985ChevroletC30N/A73.8mm Long
1985ChevroletG20N/A73.8mm Long
1985ChevroletG30N/A73.8mm Long
1985ChevroletK10N/A73.8mm Long
1985ChevroletK10 SuburbanN/A73.8mm Long
1985ChevroletK20N/A73.8mm Long
1985ChevroletK20 SuburbanN/A73.8mm Long
1985ChevroletK30N/A73.8mm Long
1985ChevroletK5 BlazerN/A73.8mm Long
1985ChevroletP20N/A73.8mm Long
1985ChevroletP30N/A73.8mm Long
1985GMCC1500N/A73.8mm Long
1985GMCC1500 SuburbanN/A73.8mm Long
1985GMCC2500N/A73.8mm Long
1985GMCC2500 SuburbanN/A73.8mm Long
1985GMCC3500N/A73.8mm Long
1985GMCG2500N/A73.8mm Long
1985GMCG3500N/A73.8mm Long
1985GMCJimmyN/A73.8mm Long
1985GMCK1500N/A73.8mm Long
1985GMCK1500 SuburbanN/A73.8mm Long
1985GMCK2500N/A73.8mm Long
1985GMCK2500 SuburbanN/A73.8mm Long
1985GMCK3500N/A73.8mm Long
1985GMCP2500N/A73.8mm Long
1985GMCP3500N/A73.8mm Long
1984ChevroletC10N/A73.8mm Long
1984ChevroletC10 SuburbanN/A73.8mm Long
1984ChevroletC20N/A73.8mm Long
1984ChevroletC20 SuburbanN/A73.8mm Long
1984ChevroletC30N/A73.8mm Long
1984ChevroletG20N/A73.8mm Long
1984ChevroletG30N/A73.8mm Long
1984ChevroletK10N/A73.8mm Long
1984ChevroletK10 SuburbanN/A73.8mm Long
1984ChevroletK20N/A73.8mm Long
1984ChevroletK20 SuburbanN/A73.8mm Long
1984ChevroletK30N/A73.8mm Long
1984ChevroletK5 BlazerN/A73.8mm Long
1984ChevroletP20N/A73.8mm Long
1984ChevroletP30N/A73.8mm Long
1984GMCC1500N/A73.8mm Long
1984GMCC1500 SuburbanN/A73.8mm Long
1984GMCC2500N/A73.8mm Long
1984GMCC2500 SuburbanN/A73.8mm Long
1984GMCC3500N/A73.8mm Long
1984GMCG2500N/A73.8mm Long
1984GMCG3500N/A73.8mm Long
1984GMCJimmyN/A73.8mm Long
1984GMCK1500N/A73.8mm Long
1984GMCK1500 SuburbanN/A73.8mm Long
1984GMCK2500N/A73.8mm Long
1984GMCK2500 SuburbanN/A73.8mm Long
1984GMCK3500N/A73.8mm Long
1984GMCP2500N/A73.8mm Long
1984GMCP3500N/A73.8mm Long
1983ChevroletC10N/A73.8mm Long
1983ChevroletC10 SuburbanN/A73.8mm Long
1983ChevroletC20N/A73.8mm Long
1983ChevroletC20 SuburbanN/A73.8mm Long
1983ChevroletC30N/A73.8mm Long
1983ChevroletG20N/A73.8mm Long
1983ChevroletG30N/A73.8mm Long
1983ChevroletK10N/A73.8mm Long
1983ChevroletK10 SuburbanN/A73.8mm Long
1983ChevroletK20N/A73.8mm Long
1983ChevroletK20 SuburbanN/A73.8mm Long
1983ChevroletK30N/A73.8mm Long
1983ChevroletK5 BlazerN/A73.8mm Long
1983ChevroletP20N/A73.8mm Long
1983ChevroletP30N/A73.8mm Long
1983GMCC1500N/A73.8mm Long
1983GMCC1500 SuburbanN/A73.8mm Long
1983GMCC2500N/A73.8mm Long
1983GMCC2500 SuburbanN/A73.8mm Long
1983GMCC3500N/A73.8mm Long
1983GMCG2500N/A73.8mm Long
1983GMCG3500N/A73.8mm Long
1983GMCJimmyN/A73.8mm Long
1983GMCK1500N/A73.8mm Long
1983GMCK1500 SuburbanN/A73.8mm Long
1983GMCK2500N/A73.8mm Long
1983GMCK2500 SuburbanN/A73.8mm Long
1983GMCK3500N/A73.8mm Long
1983GMCP2500N/A73.8mm Long
1983GMCP3500N/A73.8mm Long

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

70031

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.